Problem of baking

Scripting
1

Hello everyone, I am a newbie to gh with python. I am currently learning from a youtube and encountered a problem in Baking even I have followed the video. Are there any kind people share your knowledge on it? Many thanks.

image
image1218×560 149 KB

import rhinoscriptsyntax as rs
import Rhino.Geometry as rg
from Grasshopper.Kernel import GH_RuntimeMessageLevel as rml
import scriptcontext as sc
import System.Drawing as sd
import Rhino.DocObjects as rd
        
geo = []
colours =[]
        
        
for x in range(int(eX)):
    for y in range(int(eY)):
        pt1 = rg.Point3d(x*eX,y*eY,0)
        pt2 = rg.Point3d(x*eX+1,y*eY,0)
        pt3 = rg.Point3d(x*eX,y*eY+1,0)
        plane = rs.PlaneFromPoints(pt1,pt2,pt3)
        dis = rs.Distance(pt,pt1)
        geo.append(rg.Box(plane,rg.Interval(sX/2*-0.9,sX/2*0.9),rg.Interval(sY/2*-0.9,sY/2*0.9),rg.Interval(sZ/2*-0.9,dis/2*0.9)))
        colours.append(sd.Color.FromArgb(x/eX*250,y/eY*250,150))
        
def baker():
    for i in range(len(geo)):
        brep = rg.Brep.CreateFromBox(geo[i])
        attr = rd.ObjectAttributes()
        attr.ColorSource=rd.ObjectColorSource.ColorFromObject
        attr.ObjectColor = colours[i]
        sc.doc.Objects.AddBrep(brep, attr)
                
if bake:
    baker()
2

Hello,

You have to add this before calling sc.doc.Objects.AddBrep() (or rs.AddXXX() which you may see in other places) to let the Grasshopper switch the context to your currently active doc.

import Rhino
sc.doc = Rhino.RhinoDoc.ActiveDoc

For example:

import rhinoscriptsyntax as rs
import Rhino.Geometry as rg
from Grasshopper.Kernel import GH_RuntimeMessageLevel as rml
import scriptcontext as sc
import System.Drawing as sd
import Rhino.DocObjects as rd

import Rhino
sc.doc = Rhino.RhinoDoc.ActiveDoc

geo = []
colours =[]
        
        
for x in range(int(eX)):
    for y in range(int(eY)):
        pt1 = rg.Point3d(x*eX,y*eY,0)
        pt2 = rg.Point3d(x*eX+1,y*eY,0)
        pt3 = rg.Point3d(x*eX,y*eY+1,0)
        plane = rs.PlaneFromPoints(pt1,pt2,pt3)
        dis = rs.Distance(pt,pt1)
        geo.append(rg.Box(plane,rg.Interval(sX/2*-0.9,sX/2*0.9),rg.Interval(sY/2*-0.9,sY/2*0.9),rg.Interval(sZ/2*-0.9,dis/2*0.9)))
        colours.append(sd.Color.FromArgb(x/eX*250,y/eY*250,150))
        
def baker():
    for i in range(len(geo)):
        brep = rg.Brep.CreateFromBox(geo[i])
        attr = rd.ObjectAttributes()
        attr.ColorSource=rd.ObjectColorSource.ColorFromObject
        attr.ObjectColor = colours[i]
        sc.doc.Objects.AddBrep(brep, attr)
                
if bake:
    baker()
2 Likes
3

Hello, Petingo Yang,
Thank you so much for the advise. I finally bake it with your solution.

image
image1614×910 138 KB

1 Like
4

Hey lily,

if you want to bake your geometries with the colour as texture for the rendered view. You can update your baker() like this:

def baker():
    for i in range(len(geo)):
        brep = rg.Brep.CreateFromBox(geo[i])
        attr = rd.ObjectAttributes()
        material = rd.Material()
        material.DiffuseColor = colours[i]
        material_index = sc.doc.Materials.Add(material)
        attr.MaterialIndex = material_index
        attr.MaterialSource = rd.ObjectMaterialSource.MaterialFromObject
        sc.doc.Objects.AddBrep(brep, attr)
    sc.doc.Views.Redraw()

only as a suggestion :smiley:

1 Like